US Bridges

151st Avenue over Trib to Box Elder Ck

Good

Pennington County, South Dakota · 1.8E 0.4N Box Elder · Structure no. 000000052510276

Built
1940
85 years old, rebuilt 1990
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
32 ft
1 main span
Daily traffic
475
2022 count
Owner
County
County Highway Agency

About this bridge

151st Avenue over Trib to Box Elder Ck is a wood or timber stringer/multi-beam or girder carrying 151st Avenue over Trib to Box Elder Ck in Pennington County, South Dakota. It was built in 1940 and reconstructed in 1990, so it is 85 years old, older than the South Dakota average of 48.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 475 vehicles a day, roughly 15% of them trucks, projected to reach 475 by 2039. The structure is 32 ft (9.8 m) long and 29 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Carries151st Avenue
CrossesTrib to Box Elder Ck
Location1.8E 0.4N Box Elder
RouteCounty Highway 0
Coordinates44.11631, -103.03031
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating43.8 US tons
Inventory rating30 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic475 (2022)
Projected traffic475 by 2039
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 151st Avenue over Trib to Box Elder Ck built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1990.

What condition is 151st Avenue over Trib to Box Elder Ck in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does 151st Avenue over Trib to Box Elder Ck carry?

About 475 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is 151st Avenue over Trib to Box Elder Ck?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 29 ft wide.

Who owns 151st Avenue over Trib to Box Elder Ck?

It is owned by the County Highway Agency.